[BACKLOG-701] implement ProvidesDatabaseConnectionInformation

This is referenced in http://jira.pentaho.com/browse/BACKLOG-265 as one of the supported bulk loaders for SDR. The cleanest way for this to be supported is to provide the interface.

@dkincade please review 
getTableName is a method in the new ProvidesDatabaseConnectionInformation interface. Perhaps we should keep the old method name and delegate to the new implementation?